Further observations on prematurity and perinatal mortality in a general population and in the population of a prepaid group practice medical care plan.
作者信息
SHAPIRO S, JACOBZINER H, DENSEN P M, WEINER L
出版信息
Am J Public Health Nations Health. 1960 Sep;50(9):1304-17. doi: 10.2105/ajph.50.9.1304.